Merge bitcoin/bitcoin#29279: test: p2p: check disconnect due to lack of desirable service flags

2f23987849 test: p2p: check limited peers desirability (depending on best block depth) (Sebastian Falbesoner)
c4a67d396d test: p2p: check disconnect due to lack of desirable service flags (Sebastian Falbesoner)
405ac819af test: p2p: support disconnect waiting for `add_outbound_p2p_connection` (Sebastian Falbesoner)

Pull request description:

  This PR adds missing test coverage for disconnecting peers which don't offer the desirable service flags in their VERSION message:
  https://github.com/bitcoin/bitcoin/blob/5f3a0574c45477288bc678b15f24940486084576/src/net_processing.cpp#L3384-L3389
  This check is relevant for the connection types "outbound-full-relay", "block-relay-only" and "addr-fetch" (see `CNode::ExpectServicesFromConn(...)`). Feeler connections always disconnect, which is also tested here.

  In lack of finding a proper file where this test would fit in, I created a new one. Happy to take suggestions there.

ACKs for top commit:
  davidgumberg:
    reACK https://github.com/bitcoin/bitcoin/commit/2f23987849758537f76df7374d85a7e87b578b61
  itornaza:
    tested ACK 2f23987849
  fjahr:
    re-utACK 2f23987849
  cbergqvist:
    re ACK 2f23987849
  stratospher:
    tested ACK 2f23987. 🚀

Tree-SHA512: cf75d9d4379d0f34fa1e13152e6a8d93cd51b9573466ab3a2fec32dc3e1ac49b174bd1063cae558bc736b111c8a6e7058b1b57a496df56255221bf367d29eb5d

test/functional/test_runner.py

@@ -395,6 +395,8 @@ BASE_SCRIPTS = [
     'rpc_getdescriptorinfo.py',
     'rpc_mempool_info.py',
     'rpc_help.py',
+    'p2p_handshake.py',
+    'p2p_handshake.py --v2transport',
     'feature_dirsymlinks.py',
     'feature_help.py',
     'feature_shutdown.py',